Comment 3 for bug 1527315

Not optimal but fun. I made the same silly mistake recently thinking GIFs would be cool. But you lose colour depth (GIFs are indexed 256 colour at most) so get dithered, and the GIF files were bigger than the original MP4s. Not clever, but fun.

GIFs have two significant advantages though:
  1. A longer history of support across many web browsers (decades); and
  2. They are temporally lossless, which is good for detail (although spatially lossy in colour).

I'm still a little shocked that GIFs still exist in this century...